Embryology and congenital anomalies of lens
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this is slides for ophthalmology. which contains development of human lens & congenital lens abnormalities
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Stomach ANATOMY, FUNCTIONS AND SECRETIONS (the guyton and hall physiology)
ANATOMY, FUNCTIONS AND SECRETIONS
Anatomically, the stomach is usually divided in to two major parts:
1. Body 2. Antrum
Physiologically, the stomach is divided in to
1. the “ ORAD” portion, comprises of about first two thirds of the body.
2. the “CAUDAD” portion, comprises the remainder of the body plus the antrum.
The esophagus empties into the orad stomach.
primary function is to store food.
800 -1500 mL of food. Or 0.8 – 1.5 L
Little mixing occurs in the orad stomach because the contractions are weak and infrequent, so the ingested food remains in unmixed.
vagovagal reflex :
“initiated by swallowing or distention is define as,” A reflex that occurs from the stomach to the brain stem and then back to the stomach reduces the tone in the muscular wall of the body of the stomach so that the wall bulges progressively outward, accommodating greater and greater quantities of food up to a limit in the completely relaxed stomach”.
mixing
The digestive juices of the stomach are secreted by Gastric glands
|
Gastric glands are present in body of stomach except along a narrow strip on the lesser curvature of the stomach
|
As long as food is in the stomach. WEAK PERISTALIC CONSTRICTOR WAVES called Mixing waves begins in the mid portion of stomach and move towards antrum about once every 15 to 20 seconds.
|
These waves are initiated by the “BASIC ELECTRICAL RHYTHM”
|
Consisting of SLOW WAVES. That occurs from the body and providing powerful PERISTALIC ACTION POTENTIAL
|
Driven constrictor rings that force the antral contents towards pylorus.
Strong peristalsis in the body of stomach
after 12-24 hour of last meal sometimes last for 2-3 min
Reach its max. 3-4 days
Due to hypoglycemia
Recommandé
Stomach ANATOMY, FUNCTIONS AND SECRETIONS (the guyton and hall physiology)
ANATOMY, FUNCTIONS AND SECRETIONS
Anatomically, the stomach is usually divided in to two major parts:
1. Body 2. Antrum
Physiologically, the stomach is divided in to
1. the “ ORAD” portion, comprises of about first two thirds of the body.
2. the “CAUDAD” portion, comprises the remainder of the body plus the antrum.
The esophagus empties into the orad stomach.
primary function is to store food.
800 -1500 mL of food. Or 0.8 – 1.5 L
Little mixing occurs in the orad stomach because the contractions are weak and infrequent, so the ingested food remains in unmixed.
vagovagal reflex :
“initiated by swallowing or distention is define as,” A reflex that occurs from the stomach to the brain stem and then back to the stomach reduces the tone in the muscular wall of the body of the stomach so that the wall bulges progressively outward, accommodating greater and greater quantities of food up to a limit in the completely relaxed stomach”.
mixing
The digestive juices of the stomach are secreted by Gastric glands
|
Gastric glands are present in body of stomach except along a narrow strip on the lesser curvature of the stomach
|
As long as food is in the stomach. WEAK PERISTALIC CONSTRICTOR WAVES called Mixing waves begins in the mid portion of stomach and move towards antrum about once every 15 to 20 seconds.
|
These waves are initiated by the “BASIC ELECTRICAL RHYTHM”
|
Consisting of SLOW WAVES. That occurs from the body and providing powerful PERISTALIC ACTION POTENTIAL
|
Driven constrictor rings that force the antral contents towards pylorus.
Strong peristalsis in the body of stomach
after 12-24 hour of last meal sometimes last for 2-3 min
Reach its max. 3-4 days
Due to hypoglycemia
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After fertilization, gestation period begins
According to development gestation period divided in to,
i. germinal period ii. embryonic period iii. fetal period
Here the first week of the germinal period is discussed
Zygote undergoes cleavage
The process of each step of cleavage is explained and shown
diagrammatically
The significance of cleavage given.
Formation of morula after the compactum of blastocytes
Pushing of embryoblast towards the animal pole and blastocoel
the formation has taken place.
Formation of blastocyst completed.
A blastocyst is ready for implantation after loosing Zonapellucida.
Implantation begins in the first week of development
Features of human embryology by dr yogesh
This is an exceptional textbook on embryology with 3-dimension illustrations drawn to create a life-like effect in understanding the intricacies of developing human structure.
This text focuses on clinical cases with clinical facts. With concise text, the highlights of the book include flowcharts, tables, summary (examination guide), boxes, interesting facts, electron micrographs, clinical cases, special topics, MCQs and viva-voce questions.
Buy Now:-https://goo.gl/PF3jts
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8. Storage of neurotransmitters and neuropeptides
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10. Release of neurotransmitters
11. SNARE complex formation
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Embryology 1, first week of dev.
After fertilization, gestation period begins
According to development gestation period divided in to,
i. germinal period ii. embryonic period iii. fetal period
Here the first week of the germinal period is discussed
Zygote undergoes cleavage
The process of each step of cleavage is explained and shown
diagrammatically
The significance of cleavage given.
Formation of morula after the compactum of blastocytes
Pushing of embryoblast towards the animal pole and blastocoel
the formation has taken place.
Formation of blastocyst completed.
A blastocyst is ready for implantation after loosing Zonapellucida.
Implantation begins in the first week of development
Features of human embryology by dr yogesh
This is an exceptional textbook on embryology with 3-dimension illustrations drawn to create a life-like effect in understanding the intricacies of developing human structure.
This text focuses on clinical cases with clinical facts. With concise text, the highlights of the book include flowcharts, tables, summary (examination guide), boxes, interesting facts, electron micrographs, clinical cases, special topics, MCQs and viva-voce questions.
Buy Now:-https://goo.gl/PF3jts
Synaptic transmission types I Steps of chemical neurotransmission I Nervous S...
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This video will be about the following things:
1. Synatic transmission- Definition
2. Types of synaptic transmission
3. Process of electrical neurotransmission
4. Process of chemical neurotransmission
5. Difference between electrical and chemical neurotransmission
6. Steps of chemical neurotransmission
7. Synthesis of neurotransmitters and neuropeptides
8. Storage of neurotransmitters and neuropeptides
9. Synaptic vesicle proteins
10. Release of neurotransmitters
11. SNARE complex formation
12. Recycling of synaptic vesicle (exo-endocytic cycle)
13.Binding of neurotransmitters to postsynaptic receptors
14. Termination of action of released neurotransmitter
You can also watch the same topic on HM Learnings Youtube channel.
You can also follow HM Learnings on facebook, instagram and twitter for daily updates
Introduction to nervous system, Divisions of Nervous System, Nervous System P...
https://www.youtube.com/channel/UCrrAABI7QDRCJ1yMrQCip_w/videos
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